4-Methoxybenzophenone → 4,4'-Dimethoxybenzopinacol

HRID 329306

Reaktionsgleichung

Reaktionsgleichung von HRID 329306
[CH3:1][O:2][C:3]1[CH:16]=[CH:15][C:6]([C:7]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[O:8])=[CH:5][CH:4]=1>C(O)(=O)C.C(O)(C)C>[CH3:1][O:2][C:3]1[CH:16]=[CH:15][C:6]([C:7]([C:7]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)([C:6]2[CH:15]=[CH:16][CH:3]=[CH:4][CH:5]=2)[OH:8])([C:9]2[CH:14]=[CH:13][C:12]([O:2][CH3:1])=[CH:11][CH:10]=2)[OH:8])=[CH:5][CH:4]=1

Komponenten

4

Edukt 1

HCID 691464-Methoxybenzophenone

Produkt 1

HCID 2315384,4'-Dimethoxybenzopinacol

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 176Acetic AcidKatalysatorHCID 3776IsopropanolLösungsmittel

Versuchsvorschrift

To a one neck, one liter round bottom glass flask equipped with a stirrer and condenser was charged 10 g of 4-methoxybenzophenone, 300 cc of isopropanol, and 1 drop of glacial acetic acid. The solution was exposed to radiation through the flask wall for 140 hours from a 275 watt U.V. sunlamp situated 4 inches from the side of the flask. The solvent was stripped off under vacuum and the residue crystallized from ethyl alcohol to give 4,4'-dimethoxybenzopinacol with, after drying, a melting point of 163°-165° C.

Aufarbeitung

  1. customTo a one neck, one liter round bottom glass flask equipped with a stirrer and condenser
  2. customthe residue crystallized from ethyl alcohol

Quellen und Nachweise

ORD-Eintrag
ord-3831194276f7460ba556dfdc972e2d13
Quelldatensatz
uspto-grants-1977_04
Patentnummer
US04020233

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